/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _ASM_KVM_HOST_TYPES_H
#define _ASM_KVM_HOST_TYPES_H

#include <linux/atomic.h>
#include <linux/types.h>

#define KVM_S390_BSCA_CPU_SLOTS 64
#define KVM_S390_ESCA_CPU_SLOTS 248

#define SIGP_CTRL_C		0x80
#define SIGP_CTRL_SCN_MASK	0x3f

union bsca_sigp_ctrl {
	__u8 value;
	struct {
		__u8 c : 1;
		__u8 r : 1;
		__u8 scn : 6;
	};
};

union esca_sigp_ctrl {
	__u16 value;
	struct {
		__u8 c : 1;
		__u8 reserved: 7;
		__u8 scn;
	};
};

struct esca_entry {
	union esca_sigp_ctrl sigp_ctrl;
	__u16	reserved1[3];
	__u64	sda;
	__u64	reserved2[6];
};

struct bsca_entry {
	__u8	reserved0;
	union bsca_sigp_ctrl	sigp_ctrl;
	__u16	reserved[3];
	__u64	sda;
	__u64	reserved2[2];
};

union ipte_control {
	unsigned long val;
	struct {
		unsigned long k  : 1;
		unsigned long kh : 31;
		unsigned long kg : 32;
	};
};

/*
 * Utility is defined as two bytes but having it four bytes wide
 * generates more efficient code. Since the following bytes are
 * reserved this makes no functional difference.
 */
union sca_utility {
	__u32 val;
	struct {
		__u32 mtcr : 1;
		__u32	   : 31;
	};
};

struct bsca_block {
	union ipte_control ipte_control;
	__u64	reserved[5];
	__u64	mcn;
	union sca_utility utility;
	__u8	reserved2[4];
	struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
};

struct esca_block {
	union ipte_control ipte_control;
	__u64	reserved1[6];
	union sca_utility utility;
	__u8	reserved2[4];
	__u64	mcn[4];
	__u64	reserved3[20];
	struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
};

/*
 * This struct is used to store some machine check info from lowcore
 * for machine checks that happen while the guest is running.
 * This info in host's lowcore might be overwritten by a second machine
 * check from host when host is in the machine check's high-level handling.
 * The size is 24 bytes.
 */
struct mcck_volatile_info {
	__u64 mcic;
	__u64 failing_storage_address;
	__u32 ext_damage_code;
	__u32 reserved;
};

#define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
			  CR0_MEASUREMENT_ALERT_SUBMASK)
#define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
			   CR14_EXTERNAL_DAMAGE_SUBMASK)

#define SIDAD_SIZE_MASK		0xff
#define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK)
#define sida_size(sie_block) \
	((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)

#define CPUSTAT_STOPPED    0x80000000
#define CPUSTAT_WAIT	   0x10000000
#define CPUSTAT_ECALL_PEND 0x08000000
#define CPUSTAT_STOP_INT   0x04000000
#define CPUSTAT_IO_INT	   0x02000000
#define CPUSTAT_EXT_INT    0x01000000
#define CPUSTAT_RUNNING    0x00800000
#define CPUSTAT_RETAINED   0x00400000
#define CPUSTAT_TIMING_SUB 0x00020000
#define CPUSTAT_SIE_SUB    0x00010000
#define CPUSTAT_RRF	   0x00008000
#define CPUSTAT_SLSV	   0x00004000
#define CPUSTAT_SLSR	   0x00002000
#define CPUSTAT_ZARCH	   0x00000800
#define CPUSTAT_MCDS	   0x00000100
#define CPUSTAT_KSS	   0x00000200
#define CPUSTAT_SM	   0x00000080
#define CPUSTAT_IBS	   0x00000040
#define CPUSTAT_GED2	   0x00000010
#define CPUSTAT_G	   0x00000008
#define CPUSTAT_GED	   0x00000004
#define CPUSTAT_J	   0x00000002
#define CPUSTAT_P	   0x00000001

struct kvm_s390_sie_block {
	atomic_t cpuflags;		/* 0x0000 */
	__u32 : 1;			/* 0x0004 */
	__u32 prefix : 18;
	__u32 : 1;
	__u32 ibc : 12;
	__u8	reserved08[4];		/* 0x0008 */
#define PROG_IN_SIE (1<<0)
	__u32	prog0c;			/* 0x000c */
	union {
		__u8	reserved10[16];		/* 0x0010 */
		struct {
			__u64	pv_handle_cpu;
			__u64	pv_handle_config;
		};
	};
#define PROG_BLOCK_SIE	(1<<0)
#define PROG_REQUEST	(1<<1)
	atomic_t prog20;		/* 0x0020 */
	__u8	reserved24[4];		/* 0x0024 */
	__u64	cputm;			/* 0x0028 */
	__u64	ckc;			/* 0x0030 */
	__u64	epoch;			/* 0x0038 */
	__u32	svcc;			/* 0x0040 */
#define LCTL_CR0	0x8000
#define LCTL_CR6	0x0200
#define LCTL_CR9	0x0040
#define LCTL_CR10	0x0020
#define LCTL_CR11	0x0010
#define LCTL_CR14	0x0002
	__u16	lctl;			/* 0x0044 */
	__s16	icpua;			/* 0x0046 */
#define ICTL_OPEREXC	0x80000000
#define ICTL_PINT	0x20000000
#define ICTL_LPSW	0x00400000
#define ICTL_STCTL	0x00040000
#define ICTL_ISKE	0x00004000
#define ICTL_SSKE	0x00002000
#define ICTL_RRBE	0x00001000
#define ICTL_TPROT	0x00000200
	__u32	ictl;			/* 0x0048 */
#define ECA_CEI		0x80000000
#define ECA_IB		0x40000000
#define ECA_SIGPI	0x10000000
#define ECA_MVPGI	0x01000000
#define ECA_AIV		0x00200000
#define ECA_VX		0x00020000
#define ECA_PROTEXCI	0x00002000
#define ECA_APIE	0x00000008
#define ECA_SII		0x00000001
	__u32	eca;			/* 0x004c */
#define ICPT_INST	0x04
#define ICPT_PROGI	0x08
#define ICPT_INSTPROGI	0x0C
#define ICPT_EXTREQ	0x10
#define ICPT_EXTINT	0x14
#define ICPT_IOREQ	0x18
#define ICPT_WAIT	0x1c
#define ICPT_VALIDITY	0x20
#define ICPT_STOP	0x28
#define ICPT_OPEREXC	0x2C
#define ICPT_PARTEXEC	0x38
#define ICPT_IOINST	0x40
#define ICPT_KSS	0x5c
#define ICPT_MCHKREQ	0x60
#define ICPT_INT_ENABLE	0x64
#define ICPT_PV_INSTR	0x68
#define ICPT_PV_NOTIFY	0x6c
#define ICPT_PV_PREF	0x70
	__u8	icptcode;		/* 0x0050 */
	__u8	icptstatus;		/* 0x0051 */
	__u16	ihcpu;			/* 0x0052 */
	__u8	reserved54;		/* 0x0054 */
#define IICTL_CODE_NONE		 0x00
#define IICTL_CODE_MCHK		 0x01
#define IICTL_CODE_EXT		 0x02
#define IICTL_CODE_IO		 0x03
#define IICTL_CODE_RESTART	 0x04
#define IICTL_CODE_SPECIFICATION 0x10
#define IICTL_CODE_OPERAND	 0x11
	__u8	iictl;			/* 0x0055 */
	__u16	ipa;			/* 0x0056 */
	__u32	ipb;			/* 0x0058 */
	__u32	scaoh;			/* 0x005c */
#define FPF_BPBC	0x20
	__u8	fpf;			/* 0x0060 */
#define ECB_GS		0x40
#define ECB_TE		0x10
#define ECB_SPECI	0x08
#define ECB_SRSI	0x04
#define ECB_HOSTPROTINT	0x02
#define ECB_PTF		0x01
	__u8	ecb;			/* 0x0061 */
#define ECB2_CMMA	0x80
#define ECB2_IEP	0x20
#define ECB2_PFMFI	0x08
#define ECB2_ESCA	0x04
#define ECB2_ZPCI_LSI	0x02
	__u8	ecb2;			/* 0x0062 */
#define ECB3_AISI	0x20
#define ECB3_AISII	0x10
#define ECB3_DEA 0x08
#define ECB3_AES 0x04
#define ECB3_RI  0x01
	__u8	ecb3;			/* 0x0063 */
#define ESCA_SCAOL_MASK ~0x3fU
	__u32	scaol;			/* 0x0064 */
	__u8	sdf;			/* 0x0068 */
	__u8	epdx;			/* 0x0069 */
	__u8	cpnc;			/* 0x006a */
	__u8	reserved6b;		/* 0x006b */
	__u32	todpr;			/* 0x006c */
#define GISA_FORMAT1 0x00000001
	__u32	gd;			/* 0x0070 */
	__u8	reserved74[12];		/* 0x0074 */
	__u64	mso;			/* 0x0080 */
	__u64	msl;			/* 0x0088 */
	psw_t	gpsw;			/* 0x0090 */
	__u64	gg14;			/* 0x00a0 */
	__u64	gg15;			/* 0x00a8 */
	__u8	reservedb0[8];		/* 0x00b0 */
#define HPID_KVM	0x4
#define HPID_VSIE	0x5
	__u8	hpid;			/* 0x00b8 */
	__u8	reservedb9[7];		/* 0x00b9 */
	union {
		struct {
			__u32	eiparams;	/* 0x00c0 */
			__u16	extcpuaddr;	/* 0x00c4 */
			__u16	eic;		/* 0x00c6 */
		};
		__u64	mcic;			/* 0x00c0 */
	} __packed;
	__u32	reservedc8;		/* 0x00c8 */
	union {
		struct {
			__u16	pgmilc;		/* 0x00cc */
			__u16	iprcc;		/* 0x00ce */
		};
		__u32	edc;			/* 0x00cc */
	} __packed;
	union {
		struct {
			__u32	dxc;		/* 0x00d0 */
			__u16	mcn;		/* 0x00d4 */
			__u8	perc;		/* 0x00d6 */
			__u8	peratmid;	/* 0x00d7 */
		};
		__u64	faddr;			/* 0x00d0 */
	} __packed;
	__u64	peraddr;		/* 0x00d8 */
	__u8	eai;			/* 0x00e0 */
	__u8	peraid;			/* 0x00e1 */
	__u8	oai;			/* 0x00e2 */
	__u8	armid;			/* 0x00e3 */
	__u8	reservede4[4];		/* 0x00e4 */
	union {
		__u64	tecmc;		/* 0x00e8 */
		struct {
			__u16	subchannel_id;	/* 0x00e8 */
			__u16	subchannel_nr;	/* 0x00ea */
			__u32	io_int_parm;	/* 0x00ec */
			__u32	io_int_word;	/* 0x00f0 */
		};
	} __packed;
	__u8	reservedf4[8];		/* 0x00f4 */
#define CRYCB_FORMAT_MASK 0x00000003
#define CRYCB_FORMAT0 0x00000000
#define CRYCB_FORMAT1 0x00000001
#define CRYCB_FORMAT2 0x00000003
	__u32	crycbd;			/* 0x00fc */
	__u64	gcr[16];		/* 0x0100 */
	union {
		__u64	gbea;		/* 0x0180 */
		__u64	sidad;
	};
	__u8	reserved188[8];		/* 0x0188 */
	__u64	sdnxo;			/* 0x0190 */
	__u8	reserved198[8];		/* 0x0198 */
	__u32	fac;			/* 0x01a0 */
	__u8	reserved1a4[20];	/* 0x01a4 */
	__u64	cbrlo;			/* 0x01b8 */
	__u8	reserved1c0[8];		/* 0x01c0 */
#define ECD_HOSTREGMGMT	0x20000000
#define ECD_MEF		0x08000000
#define ECD_ETOKENF	0x02000000
#define ECD_ECC		0x00200000
#define ECD_HMAC	0x00004000
	__u32	ecd;			/* 0x01c8 */
	__u8	reserved1cc[18];	/* 0x01cc */
	__u64	pp;			/* 0x01de */
	__u8	reserved1e6[2];		/* 0x01e6 */
	__u64	itdba;			/* 0x01e8 */
	__u64	riccbd;			/* 0x01f0 */
	__u64	gvrd;			/* 0x01f8 */
} __packed __aligned(512);

struct kvm_s390_itdb {
	__u8	data[256];
};

struct sie_page {
	struct kvm_s390_sie_block sie_block;
	struct mcck_volatile_info mcck_info;	/* 0x0200 */
	__u8 reserved218[360];		/* 0x0218 */
	__u64 pv_grregs[16];		/* 0x0380 */
	__u8 reserved400[512];		/* 0x0400 */
	struct kvm_s390_itdb itdb;	/* 0x0600 */
	__u8 reserved700[2304];		/* 0x0700 */
};

#endif /* _ASM_KVM_HOST_TYPES_H */
